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——Design

Horizontal or vertical shell-and-tube heat exchanger or plate heat exchanger, with flash vessel/separator and circulation pump.

——Operation

The liquid is circulated through the heat exchanger by means of a circulation pump, where it is superheated at an elevated pressure, higher than its normal boiling pressure. When entering the separator, the pressure in the liquid is rapidly reduced resulting in some of the liquid being flashed, or rapidly boiled off.

Since liquid circulation is maintained, the flow velocity in the tubes and the liquid temperature can be controlled to suit the product requirements of the pre-selected temperature difference.

——Particular features

Less foul  – boiling/evaporation will not take place on the heating surfaces, but in the separator. Fouling due to incrustation and precipitation in the calandria is therefore minimised.

Optimised heat exchange surface  – flow velocity in the tubes determined by the circulation pump.

——Fields of application

Liquids with a high tendency for fouling, highly viscous liquids, as the high concentration step in multiple-effect evaporation plants.

Forced circulation evaporators are suited as crystallising evaporators for saline solutions.

Shanghai Dea chemical equipment Co.,Ltd

——We devote to design and develop the equipment of chemical separation and abstraction.

——We came from East China University of Science and Technology, which we long-term cooperated with later. And now, we serve for many famous universities, such as Tsinghua University , Sun Yat-sen University , etc.

——We provide equipment of distillation and extraction for the technicians in the area of chemical , medicine and food industry.

——We own senior engineers who have rich experience in chemical engineering.

——Our products can be used in lab-scale, pilot-scale experiments and small-scale production.

——The experimental results are more authentic by using our products thanks to the continuous operation during the course of the experiments or pilot-scale experiments.

——We repaire imputed equipments out-of-warranty for UIC,POPE,BUCHI in the past few years, which made us accumulating rich experience.

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